What is the air quality in Louisville today?

The current Air Quality Index (AQI) in Louisville is 27 (Good). PM2.5 concentration is 6.43 µg/m³.

What is the temperature in Louisville right now?

The current temperature in Louisville is 15.3°C (feels like 15.3°C). Humidity is 46.9% and wind speed is 49.8 km/h.

Is it safe to go outside in Louisville?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0 (Low).

Air Quality in Louisville, United States

Windy

15.3°C · 46.9% humidity

15.3°

Feels 15.3°

Good

Air quality is satisfactory. Enjoy outdoor activities.

12 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

172 5pm

172

99 8pm

112 11pm

112

124

124 2am

137

137 5am

137

124 8am

124

112

112 11am

112

112 2pm

112

Station readings

172

CAMS model adj +87

PM2.5 Trend (24h)

25h · 37 stations

46.9%

Humidity

49.8 km/h

Wind E

1007.1 hPa

Pressure

1.4

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Louisville?

Temperature & Precipitation

PM2.56.43 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX1.4

Low

Station readings (12 stations within 25 km)

6.43

Median

6.57

Average

4.29

Low

9.05

High

PM2.5 µg/m³ · Model: 4.4 · Bias: -2.0

What is the 7-day forecast for Louisville?

04-09

17.8° 5.7°

1.31 mm

04-10

12.5° 7.2°

6.94 mm

04-11

15.8° 4.8°

3.94 mm

04-12

16.2° 3.8°

1.88 mm

04-13

12.8° 3.3°

0.75 mm

04-14

9.4° -0.3°

7.88 mm

04-15

9.7° 1.2°

0.13 mm

Both models agree Avg diff: 5.0°C

Where are air quality stations near Louisville?

–

united-states-of-america-boulder-joslyn-court

13.7 km PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

Northwest Open Space

13.8 km PM2.5: 7.2 µg/m³

165

Recreation Center, Senior Center, and Theatre

14.4 km PM2.5: 82.9 µg/m³

Silver Creek

15.2 km PM2.5: 7.0 µg/m³

North Mor Elementary School

17.0 km PM2.5: 6.1 µg/m³

North Star

18.0 km PM2.5: 5.1 µg/m³

Trail Winds Recreation Center

18.1 km PM2.5: 6.3 µg/m³

Fremont Elementary School

18.3 km PM2.5: 9.1 µg/m³

Thornton Community Park

18.9 km PM2.5: 5.4 µg/m³

Rotella Park

20.8 km PM2.5: 6.1 µg/m³

What cities are near Louisville?

28 Broomfield 25 Erie 24 Boulder 27 Northglenn 27 Thornton 28 Sherrelwood 28 Arvada 23 Longmont 28 Wheat Ridge 27 Commerce City

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T20:24 UTC.